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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_RASTER_STAGING_BUFFER_POOL_H_
#define CC_RASTER_STAGING_BUFFER_POOL_H_
#include <stdint.h>
#include <deque>
#include <memory>
#include <set>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/synchronization/lock.h"
#include "base/time/time.h"
#include "base/trace_event/memory_dump_provider.h"
#include "cc/output/context_provider.h"
#include "cc/resources/resource_provider.h"
namespace gpu {
namespace gles2 {
class GLES2Interface;
}
}
namespace cc {
class Resource;
class RasterSource;
class ResourcePool;
struct StagingBuffer {
StagingBuffer(const gfx::Size& size, ResourceFormat format);
~StagingBuffer();
void DestroyGLResources(gpu::gles2::GLES2Interface* gl);
void OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
ResourceFormat format,
bool is_free) const;
const gfx::Size size;
const ResourceFormat format;
std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer;
base::TimeTicks last_usage;
unsigned texture_id;
unsigned image_id;
unsigned query_id;
uint64_t content_id;
};
class CC_EXPORT StagingBufferPool
: public base::trace_event::MemoryDumpProvider {
public:
~StagingBufferPool() final;
StagingBufferPool(base::SequencedTaskRunner* task_runner,
ContextProvider* worker_context_provider,
ResourceProvider* resource_provider,
bool use_partial_raster,
int max_staging_buffer_usage_in_bytes);
void Shutdown();
// Overridden from base::trace_event::MemoryDumpProvider:
bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
base::trace_event::ProcessMemoryDump* pmd) override;
std::unique_ptr<StagingBuffer> AcquireStagingBuffer(
const Resource* resource,
uint64_t previous_content_id);
void ReleaseStagingBuffer(std::unique_ptr<StagingBuffer> staging_buffer);
private:
void AddStagingBuffer(const StagingBuffer* staging_buffer,
ResourceFormat format);
void RemoveStagingBuffer(const StagingBuffer* staging_buffer);
void MarkStagingBufferAsFree(const StagingBuffer* staging_buffer);
void MarkStagingBufferAsBusy(const StagingBuffer* staging_buffer);
base::TimeTicks GetUsageTimeForLRUBuffer();
void ScheduleReduceMemoryUsage();
void ReduceMemoryUsage();
void ReleaseBuffersNotUsedSince(base::TimeTicks time);
std::unique_ptr<base::trace_event::ConvertableToTraceFormat> StateAsValue()
const;
void StagingStateAsValueInto(
base::trace_event::TracedValue* staging_state) const;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
ContextProvider* const worker_context_provider_;
ResourceProvider* const resource_provider_;
const bool use_partial_raster_;
mutable base::Lock lock_;
// |lock_| must be acquired when accessing the following members.
using StagingBufferSet = std::set<const StagingBuffer*>;
StagingBufferSet buffers_;
using StagingBufferDeque = std::deque<std::unique_ptr<StagingBuffer>>;
StagingBufferDeque free_buffers_;
StagingBufferDeque busy_buffers_;
const int max_staging_buffer_usage_in_bytes_;
int staging_buffer_usage_in_bytes_;
int free_staging_buffer_usage_in_bytes_;
const base::TimeDelta staging_buffer_expiration_delay_;
bool reduce_memory_usage_pending_;
base::Closure reduce_memory_usage_callback_;
base::WeakPtrFactory<StagingBufferPool> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(StagingBufferPool);
};
} // namespace cc
#endif // CC_RASTER_STAGING_BUFFER_POOL_H_